Ink jet printhead with conformally coated heater

Incremental printing of symbolic information – Ink jet – Ejector mechanism

Reexamination Certificate

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Details

C347S065000

Reexamination Certificate

active

10534803

ABSTRACT:
There is disclosed an ink jet printhead which includes a plurality of nozzles and one or more heater elements corresponding to each nozzle. Each heater element is configured to heat a bubble forming liquid in the printhead to a temperature above its boiling point to form a gas bubble therein. The generation of the bubble causes the ejection of a drop of an ejectable liquid (such as ink) through the respective corresponding nozzle, to effect printing. Each heater element is substantially covered by a conformal protective coating which has been applied to all sides of the heater element simultaneously so that the coating is seamless.

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The Fabrication and Reliability Testing of Ti/TiN Heaters, P. DeMoor, Proceedings of SPIE, Micromachining and Microfabrication Process Technology V, vol. 3874, pp. 284-293.

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